71.
    发明专利
    未知

    公开(公告)号:BR9612108A

    公开(公告)日:1999-02-23

    申请号:BR9612108

    申请日:1996-11-18

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/05071 Sec. 371 Date May 22, 1998 Sec. 102(e) Date May 22, 1998 PCT Filed Nov. 18, 1996 PCT Pub. No. WO97/19939 PCT Pub. Date Jun. 5, 1997In a process for the catalytic hydrogenation of 2,5- and 2,3-dihydrofuran with hydrogen to give tetrahydrofuran, use is made of a catalyst in which a metal or a plurality of metals have been deposited by vapor deposition or sputtering on a metal wire mesh or a metal foil as support.

    74.
    发明专利
    未知

    公开(公告)号:AT175410T

    公开(公告)日:1999-01-15

    申请号:AT95921795

    申请日:1995-05-31

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/02071 Sec. 371 Date Feb. 20, 1997 Sec. 102(e) Date Feb. 20, 1997 PCT Filed May 31, 1995 PCT Pub. No. WO95/33741 PCT Pub. Date Dec. 14, 1995Preparation of heterocyclic aldehydes I (I) (A, B=optionally substituted methylene groups; +E,uns m+EE , +E,uns n+EE =1 to 5; +E,uns m+EE ++E,uns n+EE >2), by hydrogenation of carboxylic acids IIa (IIa) or one of their esters IIb derived from a C1-C10 alcohol, at a temperature of from 200 DEG to 450 DEG C. over a catalyst. The end products are suitable as intermediates for herbicides of the cyclohexanone class.

    PROCESS FOR PRODUCING EPOXIDES USING AROMATIC PEROXYCARBOXYLIC ACIDS

    公开(公告)号:HU9801678A2

    公开(公告)日:1998-11-30

    申请号:HU9801678

    申请日:1996-02-10

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/00578 Sec. 371 Date Aug. 5, 1997 Sec. 102(e) Date Aug. 5, 1997 PCT Filed Feb. 10, 1996 PCT Pub. No. WO96/26198 PCT Pub. Date Aug. 29, 1996Preparation of epoxides from olefins by means of aromatic peroxycarboxylic acids comprises a step A of epoxidizing the olefin and removing the resulting aromatic carboxylic acid from the epoxide, a step B of catalytically hydrogenating the removed aromatic carboxylic acid to the corresponding aromatic aldehyde, and a step C of oxidizing this aldehyde with oxygen or an oxygen-containing gas mixture back to the aromatic peroxycarboxylic acid for re-use for epoxidizing an olefin.

    76.
    发明专利
    未知

    公开(公告)号:ES2120624T3

    公开(公告)日:1998-11-01

    申请号:ES94916925

    申请日:1994-05-03

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/01403 Sec. 371 Date Nov. 7, 1995 Sec. 102(e) Date Nov. 7, 1995 PCT Filed May 3, 1994 PCT Pub. No. WO92/26803 PCT Pub. Date Nov. 24, 1994Polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C20-monocarboxylic acids or polytetrahydrofuran monoethers of monohydric C1-C20-alcohols, having an average molecular weight of from 250 to 10,000 Dalton and liquid at room temperature, are prepared by the cationic polymerization of tetrahydrofuran in the presence of a telogen by a process in which tetrahydrofuran is polymerized in the presence of water, 1,4-butanediol and/or polytetrahydrofuran having an average molecular weight of from 200 to 700 Dalton and/or of a C1-C20-monocarboxylic acid and/or of a monohydric C1-C20-alcohol with the aid of a catalytic amount of a zeolite catalyst which has an SiO2/Al2O3 molar ratio of from 4:1 to 100:1 and in which the population ratio P of the acid centers on the external surface of the zeolite to the total number of acid centers of the zeolite is 0.03/l or more.

    77.
    发明专利
    未知

    公开(公告)号:ES2119477T3

    公开(公告)日:1998-10-01

    申请号:ES95933381

    申请日:1995-09-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

    79.
    发明专利
    未知

    公开(公告)号:AT169648T

    公开(公告)日:1998-08-15

    申请号:AT95933381

    申请日:1995-09-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

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